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March 24, 1931.'. E. J. VON PEIN CASH REGISTER 3 Sheets-sheet 1 FiledNov. 16, 1923 fzlllllflzlllllll n l wuQ/wtm Edward J. Von Pein Y END MMarch 24, 1931. E. .1. voN PEIN 1,797,437

CASH REGISTER Filed Nov. 16, 1923 s sheets-sheet 2 wuc/wtoz Edward J.Von Pein March 24, 1931. E. J. voN PElN CASH REGISTER Filed Nov.16,'1923 5 Sheets-Sheet 3 3mm/tofs new@ .vw Pein B M f Patented Mar. 24,1931 EDWARD VON PEEN, OF DAYTON, OHO, ASSTGNOR, BYltESNE ASSGrNI/IENTS,TO THE NATIONAL CASH REGISTER COMPANY, OF DAYTON, OHIO,' A CORPORATIONOF MARYLAND v CASH REGISTER Application filed November 16, V1923.SerialiNo. 675,158.

This invention relates to cash registers and risshown carried out inconnection with a machine of the type shown in Letters Patent of theUnited States to Thomas Carney, No.

497,860, granted May 23, 1893, and to Edward J. Von Pein, No. 1,664,955,granted April 3, 1928.

Y The present application discloses an im proved method of operating aplurality of printer impression hammers which structure is not claimedherein, but formsy the basis of a division application, SerialV No.115,903, filed J une 14, 1925. y

To insure the proper operation of the machine an interlocking mechanismcooperates with the item keys and theprinter operating mechanism. Thisinterlocking mechanism is not claimed inthe present application.

An object of the invention is to 'provide auxiliary mechanism foroperating the key coupler.

Another object of the invention is to provide an auxiliary means tolrestore the key coupler, in combination with meansto assist inoperating the auxiliary means to relieve the drive shaft of a part ofitsoperating load.

With these and incidental objects inv view, the invention consists ofcertain novel features of construction and combinations of parts, theessential elements of which are set forth in appended claims andapreferred form or embodiment of which is hereinafter described withreference to the drawings which accompany and form part of thisspeciication.

Of said drawings: v l

Fig. 1 is a transverse section of the machine taken to the left of thetotalizer.V

Fig. 2 is a detail view of the driving connection between the key`coupler and the cam shaft. n

Fig 8 is a sectional view taken between the right side frame and theprinter frame. Fig. 4 is a detail view of a part of the Areceipt feedingmechanism.

Fig. 5 is a detail view of part of the key coupler auxiliary operatingdevice. Y

Fig. 6 is a side elevation of the printer' mechanism together with apart of the driving mechanism. v. The machine disclosed, is in generalsubstantially the same asA that shown in the Carney and Von Pein patentsreferred to. Only so much of the old mechanism is disclosed as isnecessary to give an understand* ing of these improvements, and the samewill be described only in so far as is necessary to understand thespecific invention here involved.` f f `The machine includes a pluralityof groups of amount or item keys, atotalizer, item entering, itemprinting and item indicating mechanism, and adriving means. The keyhoardincludes a plurality of groups of item or amount'keys 20 pivoted on atransverse rodv 21 mounted in the side frames of the machine.

The rear ends of the keys engage akey coupler 22 which swings ontrunnions 23journaled in the side frames of the machine. Actuatorcontrollers 24, connected to the rear ends of the keys, engage-rods 25carried by rocker frames supporting totalizer actuators The totalizeractuators are normally inA mesh with gears 27 connected with the itemprinting wheels 28 (Fig. G) Vby a tube line to set up the amountsrepresented by ythe keys depressed. The key coupler 22 carries a roller29y mounted on its righthand side (Fig. 2) which cooperates with a slotin a driving double rack 30. The driving rack rotates a shaft 31 in theusual manner, asis well known in the art.

rllhe amounts representedl by the keys depressed are also entered Y in atotalizer 87 mounted in a frame88 (Fig. 1) pivotally supported ontrunnions 39 supported in a frame tie bar'of the machine. f Thetotalizer is of a well known form for this type of machine and isprovided with totalizer elements having pinions 40 adapted to engage theactuators 26 at the proper time to enter the items registered by thekeys.

Resting on the rear ends of the keys 2O are the usual tablet indicators4l elevated to av display position when the keys are operated.

`Keg] coupler device engages an upwardly extending arm 45 of a latch 46and rocks this latch on its pivot 47 Hin a cleckwise direction andreleases a springtensioned lever 48 (Figs-3 and 5) at the time the keycoupler reaches the end of its upward movement. 7 hen the lever 48 isreleased, a

projecting arm 49 is in contact with the pin 43V and assists the keycoupler inreturing to its normal position.

The spring-tensioned lever 48 is freely mounted on a stud 50 supportedin the side fra-me of the machine and is rigidly connected to an arm 5lby a hub 52. This arm has a slot 53 into which is fitted anfadjustableconnection 36 for one end of a spring 54. The other end of the spring isconnected to an arm 55 pivoted on ai pin 56 supported in the side frameof the machine. This arm' 55carries aroller 57 normally engaging adepression TQ ina cam 58 pinned to a shaft 59 and which acts as anequalizing means in the rotation of this shaft. It will be hereinafterdescribed.

`The cam 58 also has a cam groove 60 into which a roller 6l carried by apitman 62 projects. The forward end of this pitman has an elongatedopening engaging a pin 63 projecting laterally from the arm 5l. `Whenthe latch 46 is tripped, permitting the arm 51 to movecounter-clockwise, the pin 63 will move to the right hand end of theslot in the pitman 62. During the operation of the driving shaft 59thepitman moves the arm 5l clockwise to its normal position, whereupon thelatch 46, under the tension of a spring 64, will engage a rlip 65 formedon the lower end of the lever 48 to retain this lever until a followingoperation of the machine.

The spring 54 (Fig. 3) in addition to being a means for assisting thekey coupler in its operation is also a means for equalizing the load onthe driving shaft 59, the cam 58 being so formed that the tension onAthis spring Vvaries during the rotation of the driving sha-ft 5 9. Thedepression 7 O formed in the cam 58,

:isf vfor `the purpose of assisting the driving Interlocking mechanismAs the item keys and the driving-means are operated independently ofeach other, an interlock is provided between these two operating means.j Secured to the right hand ytrunnion of the key coupler, outside theprinter frame-75, isan arm 8O (Fig. 6) carrying a pin 8l which connectswith an arm 82 freelvmounted upon the trunnion 23,.V

The lower end of the arm 82 carries a-roller 83 engaging the upper edgek84 ofa lever 85 fulcrumed on la pin 86 projecting from the printer.frame 75.

As the army 82 is rocked counter-clockwise by the key coupler, the leveris moved counter-clockwise on its pivot and causes the rearwardlyextending arm 88 of the lever 85 to move out of the'path of a lug 89secured to the gear 71.

As the forward end 90 of the lever 85 moves downwardly it will pass apin 91 carried by an arm 92 always under spring tension to move in acounter-clockwise direction.

rlhereforeVas the end-90 of the lever 85V 93 of the lug'89 engages thelower arm 94 of n the lever 85 and forces this lever to return to itsnormal position, in which position the driving means is disabled by thelug 89 again being in contact with the arm 88.

vAnother interlocking feature is'provided, which allows but oneyoperation of the item keys to each operation of the drivingv means. Aspring-actuated Varm 9'5, freely'mounted upon Vthe pin 86, has alaterally projecting pin 96 engaging a shoulder formed on the lever 85.As the lever 85' is moved counterclockwise to release the cam shaft 59,as previously described, the arm contacts the pin 8l andrests upon thispin during the counterrlio clockwise movement of the arm 82. During 4the return or clockwise movement of the arm l82, the arm 95 willcontinue its counterclockwise movement until the Apin' 96 again iengages the shoulder on the lever 85, in which position an end 97 of thearm 95 will be in the path of the, pin 81 to prevent a second movementof the arm 82 by the operation of an item key. AVThe return of the lever85 to its normal position will return the arm 95 to the position shownin Fig. 6.

Printing mechanism Only so much of the printing mechanism is disclosedin Fig. 6 as enters into the invention here involved, the printer beingfully described and illustrated in the Von Pein patent previouslyreferred to. `The type wheels 28, previously described, print the itemsas they are entered, both upon a record strip 103 retained within themachine Vand an issuing strip 104.

The record strip 103 is fed from a supply roll 105 around guide rollers106 and onto a receiving roll 107 in the usual manner. The issuing strip104 is fed from a supply roll (not shown) around a guide roller 108 andbetween a feeding roller 109 and a tension roller 110. The tensionroller 110 is carried on a pivoted arm 111 and held in contact with thefeeding roller 109 by a spring 112.

The feeding rollerl 109 moves counterclockwise at each operation of themachine and retrograde motion of this roller is prevented by aspring-actuated pawl 113 which engages a ratchet wheel 114 secured tothe feeding roller 109. This feeding roller is secured to a shaft 115journaled in the printer frame 75. The(y feeding roller is operated by aspring-tensioned pawl 116 (Fig. 4) cooperating with a ratchet wheel 102pinned to the shaft 115. The pawl is pivoted on an arm 117 freelymounted upon the shaft 115. Secured to this arm is a pinion 118 which isin mesh with a segment arm 119 pivoted on a stud 120 supported by theframe work of the machine. This arm is oscilla-ted at each operation ofthe machine by two cams 121 and 122 engaging rollers 123 and 124respectively mounted upon studs carried by the segment arm 119.

The records are made upon the record strip 103 and the issuing strip 104by the aid of an inking ribbon 125 which passes partly around a feedingroller 126, over guide rollers supported in the printer frame and undera tension roller 131 carried by an arm 132 pivoted at a point 133. p

The impressions upon the record strip and the issuing strip are madesimultaneously by spring-actuated impression hammers 134 and 135. Theimpression hammer 134, which causes the impression to be made upon therecord strip 103, is pivoted upon a stud 136 mounted in the printerframe and has a formed ear 137 engaging a spring plunger 138 supportedin a bracket 139 secured to the printer frame. A downwardly extendingarm 140 of the impression hammer 134 con- .sio-n hammer 135 in itsnormal vtacts a pin 141 (Figs. 3 and 6) to return and retaintheimpression hammer 134 inl its normal position after an operatic-n.

` The impression hammer 135, which causes the impression tc be madevupon the issuing strip 104, is pivoted upon a stud 146 supported by theprinter frame and has a rearwardly extending arm with a formed ear 147engaging a springsactuated. plunger 148 supported by a bracket 149secured to the printer frame. An upwardly. extending arm 150 of theimpression hammer 135v contacts a pin 151which returns and maintains theimpresposition after an operation of the machine. f

The pins 141 and 151 are carried bya lever 152fulcrumed on a stud 153supported by the frame of the machine. This lever 152 has a 4fiat sidedpin 154 (Fig. 3) which engages a spring-pulled latch 155 pivoted on astud 156. This latch retains'the lever 152 in its normal position, asshown in Fig. 3, and the impression hammers 134 and 135 under springtension, as shown in Fig. 6. As the shaft 31 (Fig. 3) rotatescounter-clockwise during the operation of any item key 20 (Fig. 1), apin 158y carried by a disk 157 secured to the shaft engages an arm 159extending downwardly from the latch 155, and rocks the latch 155clockwise on its pivot to disengage it from the flat sided pin 154. Atthis time a nger 160 on the lever 152 engages a cam 161 and retains theimpression hammers until the nger 160 drops ofi at the shoulder 162 ofthe cam, when the spring plungers 138 and 148 (Fig. ,6) operate theimpression hammers 134 and.135 to print upon the record strip 103 andthe issuing strip 104.

The finger 160 on the lever 152 drops quickly from the high part of thecam 161 to the low part, to afford a springing hammer blow Vupon thetype carrier. v:During the operation of the driving mechanism theimpression hammers are returned to their normal positions by an upwardlyextending arm 168 of the segment arm 119 (Fig. 3). As this arm is movedcounter- 4clockwise the arm 168 engages the flat sided pin ,154 andreturns the lever 152 to a position toenable the latch 155 to againengage' the flat sided pin 154 and retain theimpression hammersin theirnormal positions until the next operation of the machine. i

Operation .'.In an operation of the machine the operthe record strip andthe issuing strip, and

releases the driving mechanism which is then operated to complete thetransaction by feeding the issuing strip and restoring the imunderstoodthat it is not intended to confine the invention to the one form orembodiment herein disclosed, for it is susceptible of embodiment invarious forms all coming Within the scope -of the claims Which follow.

What is claimed is l. In a machine of the class describe-d, incombination, a plurality of lever keys, a key coupler, a driving shaft,a swinging member adapted to be moved in one direction by a spring tocooperate with saidk key coupler in returning said keys to normalpositions, `a separately mounted latch member normally retaining saidswinging member, a member secured to said key coupler `and adapted torelease said latch, and a pitman operated by said -driving shaftforreturning said swinging member to normal position.

2. In a machine of the class described, the combination of manipulativemeans; a rockable member operated thereby; rotatable means; a movablemember normallyV under spring tension; a separately mounted latch toretain said member in normal position; means, rigid with the rockablemember, and having a projection to operate the latch to release themovable member; and a device `operated by said rotatable means to returnmember; means on the rockable member adapted to trip the latch; means torestore the normally restrained member to its normal position; and meansoperated by the drive sha-ft to operate the restoring means, to increasethe tension of the .spring at a certain time, and to release the spring,whereby the increased tension assists in operating the re# storingmeans, thus relieving the drive shaft of a part of the operating load.

4. In a machine of the class described, the combination of manipulativemeans; a rockable member operated thereby; rotatable means; a movablemember normally under spring tension; a separately mounted latch toretain said member in normal position; a

bell crank rigid with the rockable member;

manipulative means, to release the movable member; another projection onthe bell crank 'extending into the plane of the movable EDWARD J. voNPEIN.

